Brake for window-sashes



E. F. CHAFFEE.

BRAKE FOR WINDOW SASHES. APPLICATION FILED APR. :5, 191a.

Patented Sept. 14, 1920.

2 SHEETSSHEET 1.

A TTORNEYS E. F CHAFFEE. BRAKE FOR WINDOW SASHES- APPLICATION FILED APR. I5, 1918.

Patented Sept. 14,1920.

2 SHEETS-SHEET 2.

4 ATTORNEYS BRAKE Fort. aw so e ess V To all whom it may concern:

' Be it known that I, EDWARD-F. GHAFrnn, a citizen of the United States, and a resident of Syracuse, in the county of Orion have invented daga and State of New York,

d a certain new and useful Brake for Windowtaken on the plane of line 2-3, Fig. 1, illus-' Sashes, of which the cation. This invention relatesto brakes for W111- dow sashes particularly applicable tocheck following is a' specifithe movement of the sashes of railway car windows or to mcrease the'brakmg action as the movement of the sash increases, and has for its object a brake for sashes which is particularly simple in construction and highly efficient and durable in use, and also which is readily attachable to the sashes. The invention consists in the novel features and in the combina'ti hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying. drawings in which like characters deslgnate correspond ing parts in all the views.

Figure embodying my invention, the contiguous portion of the window frame 7 being also shown, one of the-stopsbeing removed, and the other stop being broken away.

Figs. 2 and 3 are enlarged sectional views trating the operation of thebrake, the

brake shoebeing shown as in'its starting position in Fig. 2, braking movement 4 Fig. 4.- is a side elevationof the detached brake. Fig. '5 is a sectional view on line 5 5,

ibis a compression member, springs of different strength or weight acting, on said member and at the limit of its in Fig.

at points spaced apart and a brake element movable along the co'niipresslon member.

The brake element is arranged tobe actu'-' ated by more or lesssudden movement of the sash to shift the brake'element along thecompression member away from themfluence of the weaker spring into a position where it is actedv onto ,a the stronger spring. 5

1 designates the compression member which is here shown as located in a body or box 2 having opposing sides or plates 3, 4,

ons and constructions 1 is afront elevation of a sash brake for window sashes comprises:

greater extent by V erably,

As amese r ends of the .slot 5' and movable or slidable along posts 7 extending between the sides 3,-

the'posts extend." v V i v 9 and 10 are'compressionsprlngs encircling the posts 7 respectively, and interposed between said ears-6qand the side 4: of the Specification of Letters latent; i Application fi1e d Aprilj15, 1918.". se iaiuo. 228th" '1 7 slot 5 therethrough, throughwhich the com-f, ,7 exposed, the co'mpres-i lSlOl'l member 1; having portions as ears 6 "ta-1" tendingunder the sideorfplate 3,. at the j;

: 4, the earshaving openings 8'through which f x box, the springlO being stronger 'or heavier than the spring than the other end and the bra'ki'ng force 9 so that oneend of the compress on. member; yields more readily} increases as the-brake element moves along, the compression member towardthe end thereof acted uponby 1 the stronger spring 10. Y

12 is'the brake element which is here along the upper face member 1, and also havinga's-light rocking movement relatlvely thereto, it bein'g here I wide shank 14L extending through a lengthwise guide slot 15 formedinthecompression member, the shank having its inner end spread at 16 to'prevent detachment thereof I from the compression member.

' The body or box 2 is usually"bent from sheet metal in the form ofa' channel, and'in' use the body is'fitted in the recess the margin of the sash 18, the recess opening through one race of thesash, as thefront face, opposedto the front wallorstop 19 and also through-the edge face of the sash. The body or box is arranged with the bottom wall 20 of the channelthat is, the-Wall between the sides '3, la-closing the side of. p the recess opening through the'edg'e face of the sash, and'with thesidewalls 3 closing the side of the recess openingthrough the front face of the sash. The'box is held in position by means offscre'ws 12,1 p i g.

through the wall 20 near" the end thereof and into the edge of thesash. There isjprefcated so that the brake shoescoact with one of the walls of thecontiguous guide 22 of a brakeat each side of the sashflo shown as -in the formof a shoe slidable 'j of the compression 7 the winclowframe as the inner faces offlthe front window stops 19. The sash; is p'rovided with the usual sash holders 24.near

the lower corners thereof. The brakefdevice is'a'rran'ged with the weaker spring-9 toward the lower end of the sash.

In operation, when the sash is raised it' is held elevated by the holder 24: and when r it is to be lowered or dropped, the' operator ,10

releases the sash holders Qtby operating the handle thereofv in the usual manner, and

usually immediately'lets goof thel'holders instead of partly supporting the sash; during, its I-ClOWIlWiLlCl movement so that the sash starts to drop,;and if .a braking force were not applied would drop suddenly with. the.

liabilit of i n'urin assen ers and of sion members '1 from the lower end toward the upper or from the point the lower weak spring 9 acts on the compression member toward the point the stronger spring 10 acts 'on said member; or rather the shoe does not travel downwardly with the sash as fast as the sash so that the compression member moves downwardly relatively to the shoe 12. Thus, the friction'of the shoes 12 on the .window stops is increased and some force must be applied to close the window sash, or

I the sash again partlylifted by the operator to displace the shoes 12 toward the weaker spring and then partly supported by the operator during its closing movement.

This brake is particularly advantageous in that itqis readily substituted for sash holding devices now used on the window sashes of railway cars and further in that owing tothe use of springs of different strength the braking action of the shoes is increased as the speed of the sash increases.

What I claim is: 1. A brake for window sashes comprising a compression member, springs acting on fsaid memberat points spaced apart, and a braking element. movable rectilinearly along said compression member between the points where the forces of the springs are applied to said member and arranged to be actuated by a sudden movement of the sash to carry the said member from the influence of one spring to that or another,substantially as and for the purpose described.

2. A brake for window sashes comprising i a compression'member, springs of different strength acting on opposite ends of said member, and a braking element shdable along sald member and arranged to be j actuated by a sudden movement of the sash to carry the said member from the influence of the weaker spring to that of the stronger.

substantiallyv as and for the purpose speci fle 1 3. Abrake for window sashes comprising a compression member, springs-of different strength acting on opposite ends of said .member, and ,a brake shoe slidable along said memberand arranged to be actuated by a sudden movement of the sash to, carry the' said member from the influence of the weaker springto that of the stronger, substantially as and for the purpose set forth.

4. A sash holder comprising compression member formed with a lengthwise guide, springs of different strength acting.

on said member near opposite ends of the guideand arranged to, be actuated by a 5. Abrake for window sashes comprising a body, having opposing sides spaced apart.

posts interposed between said sides, one 01 said sides being formed with a lengthwise slot between the posts, a compression member exposed through the slot and having portions extending under the side formed with the slot, said portions-being slidable on the posts, springs encircling the post and acting on said. member, and a brake element extending through the slot and movable along the compression element, substantially as and for the purpose specified.

6. A sash holder comprising a body including a plate formed with a slot'therein, a compression member located beneath the plate and exposed through the slot and hav-. ing ears extending under the plate at the ends of the slot, compression springs of different strength acting on said ears, and a brake shoe projecting'through the slot and slidable along said member, substantiallyas and for the purpose setforth.

7. The combination of a window frame formed with guideways, a'sash movable in the guideways and a friction brake for the sash. comprising a body set into the margin of the sash, a compression member carried by the body and opposed to a wall of one of the guides, springs of different strength acting on said member at points spaced; apart, and a brake element movable along said member between the points at, which the forces of the springs are applied to said member, the brake element engaging one of the walls. oftheguide, substantially as and for the purpose described.

In testimony whereof, I have hereunto signed my name, at Syracuse, in the county ofOnondaga, and State of New York,'this laday of March, 1918. a f

EDWARD F. OHA'FFEE. 

